The 5 senses Flashcards

1
Q

Eye: What is the stimulus?

A

Light.

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2
Q

Eye: What is the receiver?

A

Eye.

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3
Q

Eye: What is the transformer?

A

Retina.

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4
Q

Eye: What is the conductor?

A

Optic Nerve.

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5
Q

Eye: What is the analyzer?

A

Brain.

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6
Q

Eye: What is the cornea?

A

The transparent part that bulges in front of the iris and pupil and is the continuity of the sclera.

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7
Q

Eye: What is the aqueous humour?

A

A transparent jelly in between the cornea and the iris.

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8
Q

Eye: What is the iris?

A

The coloured part of the eye.

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9
Q

Eye: What does the iris do?

A

It adjusts the amount of light going on the retina.

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10
Q

Eye: What is the pupil?

A

The hole in the eye.

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11
Q

Eye: What is the lens?

A

A convex shaped thing that contracts and extends depending on the distance of the object to focus on it.

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12
Q

Eye: What does the lens do?

A

It flips the light and focuses it on the retina.

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13
Q

Eye: What is the vitreous humour?

A

A transparent jelly in between the lens and the retina.

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14
Q

Eye: What is the retina?

A

Its where the light/image focuses on.

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15
Q

Eye: What light sensitive highly specialized cells are on the retina?

A

Rods and cones.

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16
Q

Eye: What do rods and cones do?

A

They transform light and images into nerve impulses.

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17
Q

Eye: What is the choroid?

A

Its the continued part of the iris.

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18
Q

Eye: What is the choroid made up of?

A

Blood vessels that supply nutrients and oxygen to the eye.

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19
Q

Eye: What is the sclera?

A

The white tough surface of the eye except the cornea.

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20
Q

Eye: What is the optic nerve?

A

A wire like thing that sends the nerve impulses to the brain.

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21
Q

Eye: Where is the blind spot?

A

Its where the optic nerve begins.

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22
Q

Eye: Where is the fovea?

A

The back and center of the retina.

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23
Q

Eye: What is refraction?

A

It’s when light travels at different speeds through different media.

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24
Q

Eye: How do we see?

A

The image/light gets flipped onto the retina when it goes through the lens, then gets flipped back upright by our brain.

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25
Eye: Whats the scientific term for nearsightedness?
Myopia.
26
Eye: Whats the scientific term for farsightedness?
Hyperopia.
27
Eye: Myopia: The light focuses too near so the image is formed where?
In front of the retina.
28
Eye: Myopia: Why is the image in front of the retina? (Name 3 things)
The eyeball is too long, the lens is too thick, or strong ciliary muscles.
29
Eye: How can you correct the vision of a myopic person?
A concave lens.
30
Eye: Hyperopia: The light focuses too far so the image is formed where?
Behind the retina.
31
Eye: Hyperopia: Why is the image behind the retina? (Name 3 things)
The eyeball is too short, the lens is too thin, or weak ciliary muscles.
32
Eye: How can you correct the vision of a farsighted person?
A convex lens.
33
Eye: What is presbyopia?
The same as hyperopia except its due to aging.
34
Eye: What happens with presbyopia?
The lens loses its elasticity and cant bend the light as much therefore it focuses beyond the retina.
35
Ear: Whats the stimulus?
Sound waves.
36
Ear: Whats the receiver?
Ear.
37
Ear: Whats the transformer?
The cochlea.
38
Ear: Whats the conductor?
Auditory nerve.
39
Ear: Whats the analyzer?
Brain.
40
Ear: Whats the auricle and what does it do?
The outside part that we see and it captures the sound and directs it to the ear drum.
41
Ear: What is the auditory canal and what do the glands produce?
The tube in your ear leading to the ear drum and it secretes cereumen, (ear wax).
42
Ear: The auditory canal is lined with what to trap impurities?
Hairs.
43
Ear: What is an ear drum and what does it do?
It's a thin membrane that vibrates the ossicles.
44
Ear: Ear drums are very sensitive to what?
Pressure change.
45
Ear: What are ossicles?
The 3 little bones/the smallest bones in t`he body.
46
Ear: Name the 3 ossicles.
1-Hammer 2-Anvil 3-Stirrup
47
Ear: How do the ossicles work together?
They vibrate together and make a domino effect to amplify the sound.
48
Ear: What is the cochlea?
It's a tube that coils around itself and that is specialized with hair cells.
49
Ear: What does the cochlea DO?
It turns it into nerve impulses/electricity.
50
Ear: What helps you maintain your balance?
Semi-circular canals,(there are 3).
51
Ear: Where is the auditory nerve connected to? (Name 2 things).
To the cochlea and the semi-circular canals.
52
Ear: What does the auditory nerve do?
It sends the nerve impulses to the brain.
53
Ear: What does the cochlea contain?
Nerve endings essential for hearing.
54
Ear: What does the eustachian tube do?
It equalizes pressure on either side of the ear drum.
55
Touch: What is the largest organ of the body?
Skin.
56
Touch: How many layers is skin made of?
2
57
Touch: The outer layer of the skin is called what?
Epidermis.
58
Touch: What bis the epidermis made of?
Epithelial tissues.
59
Touch: The epidermis contains 2 types of cells, name them.
Keratin and melanin.
60
Touch: What is keratin?
A protein that makes the skin waterproof.
61
Touch: What is melanin?
A brown pigment that colours the skin.
62
Touch: The inner layer is called what?
Dermis.
63
Touch: What cools the body and where does it exert the body?
Sweat glands through pores.
64
Touch: Where does hair grow? (pockets)
Hair follicles.
65
Touch: What are connected to the hair follicles and what do they do?
Oil glands that keep the skin and hair soft.
66
Taste: How often do taste buds grow back?
Every 4 days.
67
Taste: The organ we use to taste is called what?
Tongue.
68
Taste: What are the receptors on the tongue?
Taste buds.
69
Taste: To taste something what do we need?
Saliva.
70
Taste: What are the openings in the taste buds?
Taste pores.
71
Taste: What two senses are linked in this case?
Smell and taste.
72
Taste: How does smell aid in tasting things?
Air enters from the nose and goes into the back of the throat so we taste a strong odor that we breathe in.
73
Smell: The nose is made up of what 2 things?
1-Bone | 2-Cartilage
74
Smell: What are two openings that air is inhale and exhaled in?
Nostrils.
75
Smell: Why are the nasal passages curved?
So that air flows and changes directions.
76
Smell: _____ ______ are invisible particles given off by smelly things.
Scent molecules.
77
Smell: As you breathe in, some of these molecules enter the nose and reach the _____ _____.
Receptors cells.
78
Smell: Electrical impulses are sent to the brain from what nerve?
Olfactory nerve.
79
Smell: Where do the scent messages register as smell?
The olfactory bulb.
80
Smell: We have different receptors for _______ ______.
Different gases.